Attachment for thread spools



Aug. 21, 1928. 1,681,263

B. A. SMITH ATTACHMENT FOREHHEAD SPOOLS Filed Aug. 16, 1926 JNVENTOR.

' sired.

Patented Aug. 21, 19 28.

UNITED STATES PATENT OFFICE.

. BRYCE A. SMITHLIQOF GLENDALE, CALIFORNIA.

- ATTACHMENT- FOR THREAD SPOOLSQ Application filed August 16, 1926. Serial No. 129,489.

vide a device that canbe produced at low cost and can be easily attached to and detached from a spoolyupon which thread or the like is wound, thus making it possible to transfer said device to another spool as de- .Another object of the invention is to provide an attachment for spools or thread whereby the loose end of the thread will be held and whereby the spool is held against rolling when placed horizontally on a smooth surface.

Further objects and advantages of my invention will appear hereinafter.

I have illustrated my invention by the accompanying drawings in which,

Figure 1, is an end view of a spool with my device in place. I

Figure 2 is a horizontal View of a spool with device in place.

Figure 3 is a cross sectional view of spool and device through the line a-a of Figure 2.

Figure 4 is an enlarged plan view of my device.

Figure 5 device.

In carrying out my invention I employ a length of spring material 6, Fig. 4, and bend an intermediate portion of same to an approximate V shape the sides of said V being the portions 16 and 17, Fig. 5 also shown in Figs. 1, 3, 4 and by dotted lines in Fig. 2.

The ends of said material are bent in op posite directions at 9 and 10, Figs. 1, 2, 4.- and 5, the end 8 forming approximately a right angle with the portion 17 and the end 7 forming an angle less than a right angle with the portion 16 of the V, Fig. 5. The end 7 is extended to a length that allows it to project over the edge of a thread spool when the V portion of the device is inserted in the bore of said spool.

At 14, on said extended end the material is bent through approximately 180 degrees and in an opposite direction from the V portion is an enlarged side view of my so that the portion 13, Figs. 1, 2, 4, 5, comes in contact or is contiguous with the portion 7 the extreme end of said portion 13 being bent outwardly from portion 7 as at 12 and thus forming a clasp the entrance to which is shown at 11, Figs. 1, 2, land 5.

When the V portion 15 of-the device is inserted in the bore 18 of the thread spool 20, Figs. 1 and 2,-the side portions 16 and 17 of the V 15 become approximately parallel forming a U, as, shown by the dotted lines in Fig. 2. The said springmaterial being flat or rectangular in shape, possesses the corners 22 and 23, Figs. 3 and 5,.so that when the V portion 15 of the device is forced into the bore 18 of the thread spool 20, thespring pressure exerted by the .sides 16 and 17 of the V portion against the wall of the bore 18 in the thread spool 20 forces the corners 22 and 23, Figs. 3 and 5, to depress slightly into the said wall and preventing the device from revolving, as illustrated by the sectional View Fig. 3.

' The V portion 15 of the device is of the proper length and has the proper contact area for rigidity and yet permits said device to be attached to and detached from a thread spool withease.

Said device can most easily be forced down to its proper position on. the thread spool by exerting pressure with the thumb and first finger on the points 9 and 10 re- L spectively, and can most easily be removed by lifting the end 8 with the finger nail or other means.

The angle formed by the portion 7 and the side 16 of the V portion is less than a right angle, F ig5, so that when the device is placed in its proper position on the thread spool as shown in Figs. 1, 2 and 3,the said angle is increased to approximately a right angle causing the portion 7 to press tightly against the end of the thread spool 20 at the point 19 Figs. 1, 2 and 3. This pressure of the portion 7 against the end of the thread spool 20 has the advantage of preventing the thread 21, Figs. 2 and 3, from dropping down between the portion 7 and the end of the thread spool 20, when said thread is beipg drawn into the clasp 13, Figs. 1, 2 anc At 14, shown in all figures, the material is bent with a. radius sufiiciont to protect the material in bending and to give the clasp 13 the proper tension to hold the loose end of the thread 21.

When it is desired to attach the loose end of the thread 21 to the clasp 13, the said thread should be carried around the portion of the clasp that projects over the edge of, the thread spool 20, as at 24, Figs. .2 and 3, and then into the clasp through the clasp entrance 11 as shown in Fig. 2. By so doing the thread is kept taut and is prevented from rolling over the edge of the thread spool 20.

iv virtue of the projecting end 14:, Figs. l, 2 and 3, the thread spool is prevented from rolling when placed horizontally on a smooth surface.

It will be apparent now that I have pro vidcd a simple and eliicient means for holding the loose end of thread commonly wound on spools and, while I have specified certain construction, I do not limit myself to any construction or arrangement of parts and may alter same as I desire Without enlarging the scope of my invention within the appended claims.

Having described my invention, what I claim is:

1. In a device of the class described, a length of spring material having an intersecuring a loose end mediate portion bent in an approximate V form with the ends of said material oppositel directed on a plane at substantially right angles to the longitudinal axis of the V portion, and means on one such end for securing a loose end of thread.

2. A device of the class described consisting of material bent to a U shape and adapted to be inserted into the bore of a spool upon which thread or the like is wound, the ends of said material being bent, over and :1 '21 from each other to lay flat against the end of said spool, one such end long enough to project over the edge of such spool and a clasp formed on said long end for holding the loose end of thread or the like wound on the said spool.

In a device of the class described, a. length of flat spring material having an intermediate portion bent in an approximate V form with the ends of said material oppositely directed on a plane at sul'istantially right angles to the longitudinal axis of the V portion, and means on one such end for of thread.

BRYCE A. SMITH. 

